.main-myteaching {
  width: 100%;
  height: inherit;
  background: #fafafa;
  position: relative;
  overflow: hidden;
  .no-jiaocan {
    display: block;
    width: 108px;
    height: 80px;
    margin: 200px auto 0;
  }
  .no-jiaocan-info {
    font-size: 14px;
    font-family:
      PingFangSC-Regular,
      PingFang SC;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.25);
    line-height: 20px;
    text-align: center;
    display: block;
    margin-top: 24px;
  }
  .teaching {
    width: 100%;
    height: 100%;
  }
  /* 右边按钮,点击展开教参列表 */
  .menu-img {
    position: fixed;
    top: calc(50vh - 52px);
    right: 0;
    cursor: pointer;
    z-index: 999;
  }
  .close-img {
    position: fixed;
    top: calc(50% + 4px);
    right: 0;
    cursor: pointer;
    z-index: 999;
  }
  .min-img {
    position: fixed;
    top: calc(50% + 60px);
    right: 0;
    cursor: pointer;
    z-index: 999;
  }
  /* 下面主按钮 */
  .bottom {
    width: 25em;
    height: 64px;
    background: rgba(255, 255, 255, 0.75);
    box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    display: flex;
    position: fixed;
    bottom: 24px;
    left: 50%;
    margin-left: -200px;
    z-index: 100;
    .item3 {
      margin-left: 8px;
    }
    .item5 {
      margin-right: 8px;
    }
    .item:hover {
      background: rgba(252, 139, 9, 0.15);
      span {
        color: #fc8b09;
      }
    }
    .itemChecked {
      background: rgba(252, 139, 9, 0.15);
      span {
        color: #fc8b09;
      }
    }
    .item {
      width: 64px;
      cursor: pointer;

      img {
        margin: 0 auto;
        display: block;
      }
      .img1 {
        margin-top: 10px;
        margin-bottom: 6px;
      }
      .img2 {
        margin-top: 11px;
        margin-bottom: 7px;
      }
      .img3 {
        margin-top: 9px;
        margin-bottom: 5px;
      }
      .pencilIcon {
        width: 23px;
        height: 32px;
      }
      .img4 {
        margin-top: 11px;
        margin-bottom: 6px;
        width: 32px;
        height: 29px;
      }
      .img5 {
        margin-top: 13px;
        margin-bottom: 8px;
      }
      .img6 {
        margin-top: 12px;
        margin-bottom: 8px;
      }
      span {
        height: 14px;
        font-size: 12px;
        font-family:
          PingFangSC-Regular,
          PingFang SC;
        font-weight: 400;
        color: rgba(0, 0, 0, 0.65);
        line-height: 14px;
        display: block;
        text-align: center;
      }
    }
  }
  .bottom1 {
    width: 336px;
    margin-left: -168px;
  }
  /* 上一页 下一页样式 */
  .page {
    display: flex;
    position: fixed;
    bottom: 24px;
    z-index: 100;
    .common {
      width: 39px;
      height: 39px;
      background: rgba(0, 0, 0, 0.35);
      cursor: pointer;
      img {
        width: 39px;
        height: 39px;
      }
    }
    .common-black {
      background: rgba(0, 0, 0, 0.65);
    }
    .middle {
      font-size: 20px;
      font-family:
        PingFangSC-Medium,
        PingFang SC;
      font-weight: 500;
      color: #52595f;
      line-height: 39px;
      margin-left: 8px;
      margin-right: 8px;
      span {
        color: rgba(252, 139, 9, 1);
      }
    }
  }
  /* 放大缩小 */
  .size {
    position: fixed;
    bottom: 24px;
    z-index: 100;
    .fangdasuoxiaocommon {
      cursor: pointer;
      display: block;
    }
  }
  .left-size {
    left: 80px;
  }
  .right-size {
    right: 80px;
  }
  .left-page {
    left: 25px;
  }
  .right-page {
    right: 25px;
  }
  .chalk-board {
    position: absolute;
    width: 100%;
    left: 0px;
    top: 0px;
  }
  .shape {
    position: absolute;
    top: 0;
    left: 0;
  }
  .my-sizecolor-class {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.1);
    position: absolute;
    top: -66px;
    .triangle_border_down_1 {
      display: block;
      width: 0px;
      height: 0;
      border-width: 22px 14px 0;
      border-style: solid;
      border-color: #fff transparent transparent;
      position: absolute;
      left: 20px;
      bottom: -20px;
    }
  }
}
